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Limits to Population Growth and Predicting the Impact of Human Population Growth. Elena Velez, Alyssa Rusch hr2. Limiting factors are things or circumstances that prevent a species or population from increasing.
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Limits to Population Growth and Predicting the Impact of Human Population Growth Elena Velez, Alyssa Rusch hr2
Limiting factors are things or circumstances that prevent a species or population from increasing. Carrying capacity is when a population or species exceeds an environments capacity to uphold or "house" the species. Limiting factors and Carrying capacity
Density; dependant and independant factors • Density dependant factors reduce and cut back the population and regulate it's size. • Density independant factors are those that affect a species carrying capacity through natural causes.
Growth happens in cycles: factors include birthrates, deathrates, predators, a species fertility rate, natural conditions and/or environmental contributors. Causes of population growth cycles
History of Human Population - Disease, wars, lack of food poor living conditions, and lack of sanitation. + Better sanitation, more accessible food supply, medical breakthroughs and increased technology.
Nation's age structure affects population growth • Age structure of a population is the proportion of people in different age groups. • If a country or environment is improving, the age structure changes.
supplementary articles Population Growth and how it affects our everchanging world equilibrium and harmony in our surrounding environment.
Citations: 1999, Late. "Human Populations." The Global Change Program at the University of Michigan. Web. 26 May 2010. http://www.globalchange.umich.edu/globalchange2/current/lectures/human_pop/human_pop.html. Time, That. "Population Profile of the United States." Census Bureau Home Page. Web. 26 May 2010. http://www.census.gov/population/www/pop-profile/natproj.html. Limiting Factors. (2002). International hunter education association. Retrieved (2010, May 26) from http://homestudy.ihea.com/wildlife/09limits.htm Topic: Density Independent Factors. (2010). Ask. Retrieved (2010, May 26) from http://www.ask.com/questions-about/Density-Independent-Factors Olen Cowgill, D. (n.d.). The American journal of sociology, vol. 55, no. 2 (sep., 1949), pp. 163-170. The University of Chicago Press, Retrieved from http://www.jstor.org/stable/2770894 Winstead, R. (n.d.). Population regulation. IUP Biology, Retrieved from http://www.nsm.iup.edu/rwinstea/popreg.shtm King, D. (n.d.). Population growth and biodiversity. The Rewilding Institute, Retrieved from http://rewilding.org/rewildit/our-programs/population-growth/